Method of and apparatus for continuous vulcanizing



O. GROSVENOR. METHOD OF AND APPARATUS FOR comnwuous VULCANIZING.

w 7 APPLICATION FILED FEB, 5,192]. 1,415,929. Patented May 1 ,1922

2 SHEETSSHEET 1,

I 0/142 606 VHOE a, .m A

. APPLICATION FILED FEB. 5,192]. 1,415,929.

0 GROSVENOR. METHOD OF AND APPARATUS FOR commuous VULCANIZING.

I SHEET 2.

Patented May 16, 1922.

Z SHEE"S PATENT pence.

OLIVER GROSVENOR, OI AKRON, OHIO.

METHOD OF AN D APPARATUS FOR CONTINUOUS VULCANIZTNG.

To all whom it may concern:

Be it known that ,I, OLIVER Gnosvnnon, a citizen of the United States, and a resident of Akron, county of Summit, and State of Ohio, have invented a new and useful Improvement in Methods of and Apparatus for Continuous Vulcanizing, of which the following is a specification, the rinciple of the invention being herein exp ained and the best mode in which I have contemplated applying that principle, so, as to distinguish it from a other. inventions.

The present invention relates to a method and apparatus adapted to continuously vulcanize fabric belting or vulcanizable mate- .rial which must be handled in long lengths.-

In the present form the apparatus is particularly adaptable to the curing of strips of tire flap material which must be vulcanized into a curved form, and which must be passed over rolls and heated during this passage. To the accomplishment of the foregoing and related ends, the invention, then, consists of the steps and means hereinafter fully described and particularly pointed out in the claims.

The annexed drawings and the IOilOWiIlg description set forth in detail certain mecha nism embodying the invention, such disclosed means constituting, however, but one of various mechanical forms in which the principle of the invention may be used.

In said annexed drawings Fig. 1 is a top plan. view with the cover or housing removed; Fig. 2 is a side elevation, utshowing-the cover in section; Fig. 3 is an end elevation of one of the 1118; Fig. 4 is a sectional view of a detail Fig. 5 is a broken elevation of a modified form of roll; and Fig. 6 is a modified form of construction. The present apparatus consists of a suitable base 1 in which are journale. twolarge drums 2 and 3 which are hollow and which are provided with suitable steain connections 4. so that'the drums may be inte'riorlyheated. One of the drums is provided exteriorlybf the base with a sprocket wheel 5 adapted tobe engaged by a chain 6 of-drum is suitable for the curing of belting Specification of Letters ratent.

sufficient for the roll.

Patented May 16, 1922.

Application filed February 5, 1921. Serial No. 442,610.

where the belting or strapping is to be fiat when finished. As shown in Fig. 1, the grooves-on the drums are slightly stag ered so that in passing the material around the drums it will follow from the end groove on drum, where it is contacted by a forming roll 13 to press the material into the groove at this point. The material then passes to the next groove on the first drum, and around that drum to the second groove on the drum carrying the forming roll, and so on until the material passes off and on to a receiving.

spool 14 which, is mounted on the frame.

A housing or casing 15 is preferably provided around the drums, the housing being secured to suitable supporting brackets 16 on the base and being provided with open- .ings 17 to allow the entrance and exit of the material being'treated; This housing is provided with a series of heating tubes or coils 18, so that heat may be applied to the housing and thus to the material to be treated externally as well as from the heated drums. In Fig. 6 a modified form of construction is shown in which the driven roll 25 is the same as in thefirst form but the other roll 26 is mounted at an angle to the horizontal so that while the grooves 27 in this roll are in line at the top, with the grooves in .roll 25,

they are in line with the successive grooves at the bottom. This facilitates the passage of the strip of material from roll to roll and furthermore it increases the length of the strap over each successive groove so that additional tension is placed on the belt or strip of material during its vulcanization. It has been found that an angle of about 10 is The same increased tension'may be obtainedin the first form of rolls by increasing the roll diameter so that each groove is of slightly greater diameter than the adjacent one.

" It will thus be seen that the drums, being of large size and having a series of grooves on their surfaces, allow the material to be treated to receive the heat treatment during the entire passage of the material from its entrance into the housing until it leaves the same, and the speed at which the rolls will be revolved will depend upon the length of time necessary to satisfactorily cure the material, and also upon-the size of the rolls, and this speed will vary somewhat with the material which is being treated, according to the thickness thereof, as well as to the amount of cure which may be desired.

Other modes of applying the principle of my invention may be employed instead of the one explained, change being made as reglards the mechanism and steps herein dis- 0 osed, provided the means or steps stated by any of the following claims or the equivalent of such stated means or steps be employed. I j

I therefore particularly point out and distinotly claim as my invention 1. n a machine for continuously vulcan- ,izing strip material, the combination of a base, two internally mounted on said adapted to receive on their surfaces,

heated drums rotatably base, said drums being the material to be treated such material passing con-- tinuously around from one to the other of said drums, and means for revolving said drums and thereby move such material to vulcanize the same at a. predetermined rate.

2. In a machine for continuously vulcanizing strip material, the combination of a base, two internally heated drums rotatably mounted on said base, said drums being ada ted to receive the material to be treated on their surfaces, such material passing con tlnuously around from one to the other of said drums,

means for revolving said' drums and thereby move such material to vulcanize the same at a predeterminedrate, and means adapted, toapply pressure to such material while thus in contact with one of said drums.

3. In a machine for continuously vulcanizing strip material, the combination of a base, the internally heated drums rotatably mounted on said base, said drums being Mia ted to receive the material to treated on eir surfaces, such material passing continuously around from one to the other efl S id drums, andmeans for revolving said drums and thereby move such material to I vulcanize the same at a predetermined rate,

said drums being arranged and constructed so as to put an increased tenslon on such material during its passage therearound.

received in-such grooves,

4. In a machine for continuously vulcanizing strip material, the comblnatlon of a base, two internally heated drums rotatably mounted on said base, said drums being provided with grooved surfaces and being adapted to have the material to be treated and means adapted to revolve said drums to move the material continuous-1y around the drums to vulcanize the same.

5. In a machine for continuously vulcan vmounted on said ously move such material over the drums to vulcanize the same.

6. In a machine for the continuous vulcanization of strip material, the combination of a base, two interiorly heated drums rotatably mounted therein, said drums having grooved surfaces, the grooves on one drum being staggered with respect to those on the other drum, a feed and a receiving spool mounted adjacent said base, the material being adapted to be continuously wound around said two drums within such grooves, and means adapted to revolve said drums and the receiving spool to continuously move the material. a

7. In a machine for the continuous vulcanization of strip material, the combination of a base, two interiorly heated drums rotatably mounted therein, said drums having grooved surfaces, the grooves on one drum being staggered with respect to those on the other drum, a feed and a receiving spool mounted adjacent said base, the material being adapted to be continuously wound around said two drums within such grooves, a forming roll mounted adjacent one drum and adapted to force the material snugly into such groove during movement of said drum, and means to revolve said drums and said receiving spool to continuously move the material.

8. In a machine for the continuous vulcanization of strip material, the combination of a base, two hollow drums rotatably base, said drums being adapted to receive and form the material to be treated, means connecting with said drums for furnishing heating medium to the interior thereof, a casing mounted on said base and enclosing said drums, and heating pipes mounted in said casing to heat the ma terial during its passage around said drums.

9. In a machine for the continuous vulcanization of strip material, the combination of a base, two hollow drums rotatably 10. In a machine for continuously vulcanizing strip material,the combination of a base, two internally heated drums rotatably mounted on said base, the surfaces of said drums being adapted to receive the material to be treated, one of the drums being mount-v ed at such an angle that the axes of the drums are neither parallel or intersecting so as to allow the material to be treated, to be continuously Wound about said drums, and means to movethe material continuously around the drums to vulcanize the same.

11. In a machine for continuously vulcanizing strip material, the combination of a base, two internally heated drums rotatably mounted on said base,said drums being provided with grooved surfaces and being adapted to have the material to be treated received in such grooves, one of the drums being mounted at such an angle that the axes of the drums are neither parallel nor intersecting so as to stagger the position of the grooves at either the top or the bottom of the drums, and means adapted to move the material continuouslyaround the drums to vulcanize the same.

12. In a machine for continuously vulcanizing strip material, the combination of a base, two internally heated drums rotatably, mounted on said base, said drums being provided with grooved surfaces and being adapted to have, the material to be treated received in such grooves, one of the drums being mounted at such an angle that the axes of the drums are neither parallel nor intersecting so as to stagger the position of the grooves at either the top or the bottom of the.drums,]and means for providing a path of increased length around the drums to put an increased tension on the material during its passage therearound, and means for moving the material continuously around the drums to Vulcanize the same.

13. In a method of vulcanizing strip material, the steps which consist in passing such material while under tension continuously around two internally heated, revoluble drums.

14. In a method of vulcanizing strip lilaterial, the steps which consist in passing- OLIVER GROS VENOR. 

